WO2020162708A1 - Anode et batterie secondaire au lithium la comprenant - Google Patents

Anode et batterie secondaire au lithium la comprenant Download PDF

Info

Publication number
WO2020162708A1
WO2020162708A1 PCT/KR2020/001757 KR2020001757W WO2020162708A1 WO 2020162708 A1 WO2020162708 A1 WO 2020162708A1 KR 2020001757 W KR2020001757 W KR 2020001757W WO 2020162708 A1 WO2020162708 A1 WO 2020162708A1
Authority
WO
WIPO (PCT)
Prior art keywords
active material
metal
negative electrode
silicon
carbon
Prior art date
Application number
PCT/KR2020/001757
Other languages
English (en)
Korean (ko)
Inventor
김동혁
이용주
오일근
Original Assignee
주식회사 엘지화학
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 엘지화학 filed Critical 주식회사 엘지화학
Priority to EP20752577.5A priority Critical patent/EP3907786A4/fr
Priority to CN202080013215.0A priority patent/CN113574696A/zh
Priority to US17/429,085 priority patent/US20220131157A1/en
Publication of WO2020162708A1 publication Critical patent/WO2020162708A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
    • H01M4/386—Silicon or alloys based on silicon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
    • H01M4/624—Electric conductive fillers
    • H01M4/626—Metals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/133—Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/134—Electrodes based on metals, Si or alloys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/362—Composites
    • H01M4/364—Composites as mixtures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/362—Composites
    • H01M4/366—Composites as layered products
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H01M4/483—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides for non-aqueous cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
    • H01M4/5825—Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
    • H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
    • H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
    • H01M4/587—Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/64—Carriers or collectors
    • H01M4/66—Selection of materials
    • H01M4/661—Metal or alloys, e.g. alloy coatings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M2004/021—Physical characteristics, e.g. porosity, surface area
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
    • H01M2004/027—Negative electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/10—Batteries in stationary systems, e.g. emergency power source in plant
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to a negative electrode including a silicon-based active material, a carbon-based active material, and a metal nanowire, and a lithium secondary battery including the same.
  • a secondary battery is composed of a positive electrode, a negative electrode, an electrolyte, and a separator.
  • the negative electrode includes a negative electrode active material that inserts and desorbs lithium ions from the positive electrode, and a silicon-based active material having a large discharge capacity may be used as the negative electrode active material.
  • the silicon-based active material has low initial efficiency, and the volume expands excessively during the charging and discharging process, resulting in a problem that the life of the battery is reduced.
  • Patent Document 1 Korean Patent Application Publication No. 10-2013-0092943
  • the present invention is to solve the above problems, to provide a negative electrode having excellent capacity characteristics, initial efficiency, and high temperature life characteristics, and a lithium secondary battery including the same.
  • a metal current collector And a negative active material layer including a negative active material and a metal nanowire, and formed on the metal current collector, wherein the negative active material includes a silicon-based active material and a carbon-based active material, and the metal nanowire is copper, gold,
  • a cathode comprising at least one metal selected from the group consisting of nickel, cobalt, and silver is provided.
  • a lithium secondary battery including the negative electrode is provided.
  • the negative electrode according to the present invention can improve the capacity characteristics of a lithium secondary battery by using a silicon-based active material having a large capacity, and maintain excellent initial efficiency by using a metal nanowire that does not cause an electrochemical reaction with lithium.
  • the metal nanowire minimizes damage to the conductive path even when the silicon-based active material expands during charging and discharging, thereby improving high-temperature life characteristics of the lithium secondary battery.
  • the negative electrode according to the present invention includes a metal current collector; And a negative electrode active material layer including a silicon-based active material and a carbon-based active material, and a metal nanowire, and formed on the metal current collector.
  • the metal nanowire includes at least one metal selected from the group consisting of copper, gold, nickel, cobalt, and silver.
  • the metal current collector is not particularly limited as long as it has high conductivity without causing chemical changes to the battery, for example, copper, gold, nickel, cobalt, silver, stainless steel, aluminum, titanium, and calcined carbon. , Surface treatment of copper or stainless steel with carbon, nickel, titanium, etc., aluminum-cadmium alloy, etc. may be used. Alternatively, fine unevenness may be formed on the surface to enhance the bonding strength with the negative electrode active material slurry, and may be used in various forms such as films, sheets, foils, nets, porous bodies, foams, and nonwoven fabrics.
  • the negative active material layer may be disposed on the current collector. Specifically, the negative active material layer may be disposed on one or both surfaces of the current collector.
  • the negative active material layer may include a negative active material and a metal nanowire.
  • the negative active material includes a silicon-based active material and a carbon-based active material.
  • a compound having a high discharge capacity includes silicon (Si), a silicon oxide represented by SiO X (0 ⁇ X ⁇ 2), a metal silicate, and the like.
  • the silicon-based active material may include all of the silicon (Si), silicon oxide represented by SiO X (0 ⁇ X ⁇ 2), and metal silicate.
  • the silicon-based active material may include a case in which the metal silicate is present in a silicon oxide represented by SiO X (0 ⁇ X ⁇ 2) in a phase.
  • the metal silicate may be formed by doping or reducing a metal having high reactivity with oxygen in silicon oxide.
  • silicon oxide SiOx, 0 ⁇ x ⁇ 2
  • SiOx, 0 ⁇ x ⁇ 2 silicon oxide
  • SiO 2 silica
  • some of the lithium ions inserted in the charging process are It is not released from the silica and may be maintained in a lithium-silicate state.
  • the metal silicate is intentionally formed to occupy an irreversible site in the silica, and serves to prevent a decrease in the reversible capacity of the battery.
  • a metal having high reactivity with oxygen may be used to form a metal silicate.
  • the metal silicate may include at least one selected from the group consisting of lithium silicate, magnesium silicate, aluminum silicate, calcium silicate, and titanium silicate.
  • silicon-based active material of the present invention carbon may be further included, and more specifically, silicon (Si), silicon oxide represented by SiO X (0 ⁇ X ⁇ 2), metal silicate, etc. may be located in the core.
  • silicon Si
  • silicon oxide represented by SiO X (0 ⁇ X ⁇ 2)
  • metal silicate etc.
  • carbon may be included in the coating layer coated on the core.
  • conductivity may be further improved compared to a silicon-based active material containing only a silicon-based compound.
  • the silicon-based active material includes a core including a silicon oxide represented by SiO X (0 ⁇ X ⁇ 2) and a metal silicate present as a phase in the silicon oxide
  • the carbon is included
  • the coating layer may be formed on the core including the metal silicate and on the surface of the core.
  • the diameter of the silicon-based active material may be 1 ⁇ m to 20 ⁇ m, preferably 1 ⁇ m to 15 ⁇ m, more preferably 1 ⁇ m to 10 ⁇ m. For example, it may be 1 ⁇ m to 3.5 ⁇ m.
  • the diameter of the silicon-based active material is determined by irradiating the laser to the particles passing through the sensor inside the analyzer through a particle size analyzer (PSA), and then measuring the laser blocked or scattered by the particles. Can be measured.
  • PSD particle size analyzer
  • the carbon-based active material is an active material having a high discharge capacity at a certain level while having a lower volume expansion rate than that of a silicon-based active material during charging and discharging.
  • the carbon-based active material may be included in the negative active material layer together with the silicon-based active material.
  • the carbon-based active material may include at least one selected from the group consisting of natural graphite, artificial graphite, hard carbon, soft carbon, carbon black, acetylene black, Ketjen black, super P, graphene, and fibrous carbon.
  • the silicon-based active material and the carbon-based active material are included in a weight ratio of 0.1:99.9 to 30:70, preferably 0.1:99.9 to 20:80, more preferably 0.1:99.9 to 7:93 weight ratio I can.
  • the silicon-based active material and the carbon-based active material are included within the above range, it is possible to improve the capacity characteristics of the battery while minimizing the occurrence of a short circuit in the battery.
  • a silicon-based active material is a compound having a discharge capacity of four or more times greater than when a graphite-based active material is used alone, and has been recently studied in various angles for application to a negative electrode active material.
  • the degree of contraction and expansion during charging and discharging is high, and as the number of times of charging and discharging increases, the capacity retention rate sharply decreases, and there is a problem in that the lifespan characteristics are low.
  • carbon-based conductive material such as carbon nanotubes or graphene.
  • the carbon-based conductive material has high conductivity, it has high electrochemical reactivity with lithium ions, so charging and discharging Since the initial efficiency of the battery is low due to high reversible capacity loss rate during the reaction, there is a problem that it is difficult to commercialize.
  • the present inventors have developed a negative electrode including a metal nanowire instead of a carbon-based conductive material.
  • the metal nanowire does not participate in the reaction when the lithium ion battery, etc., electrochemically reacts during charging and discharging, so that irreversible capacity does not occur, so that the initial efficiency can be maintained in a high state.
  • By minimizing damage to the conductive path according to the volume change of the silicon-based active material it is possible to maintain high conductivity.
  • the metal of the metal nanowire may be one or more metals selected from the group consisting of copper, gold, nickel, cobalt, and silver, and specifically, the metal nanowire is selected from the group consisting of copper, gold, and silver. It may be one or more metals.
  • the metal nanowire may not participate in oxidation and reduction reactions at the driving potential of the negative electrode when the battery is driven. Accordingly, side reactions (alloy formation reaction) of the metal nanowires during the charging and discharging process of the battery may be suppressed, so that a decrease in conductivity of the negative electrode may be suppressed.
  • the metal of the metal nanowire may be copper.
  • the copper has an advantage in terms of price compared to other metals, and it is easy to manufacture it as a metal nanowire.
  • the same metal as the metal of the metal current collector, which is one component of the negative electrode, may be used. In this case, since the interface resistance between the metal current collector and the metal nanowire can be minimized, the efficiency of the battery can be improved.
  • the average diameter of the metal nanowires may be 1 nm to 500 nm, specifically 20 nm to 300 nm, more specifically 30 nm to 120 nm, and preferably 35 nm to 70 nm.
  • the average diameter of the metal nanowires is within the above range, aggregation between the metal nanowires is minimized, and even when the same content as the existing conductive material is added, a larger number of metal nanowires may be included in the cathode, Excellent electrical conductivity.
  • the average diameter of the metal nanowires is 35 nm to 70 nm, the conductive network in the cathode may be more uniformly formed while the metal nanowires are maintained without being broken.
  • the average length of the metal nanowires may be 0.5 ⁇ m to 250 ⁇ m, preferably 15 ⁇ m to 80 ⁇ m, more preferably 42 ⁇ m to 70 ⁇ m.
  • disconnection of the conductive path may be minimized even when the silicon-based active material expands in volume during charging and discharging, so that the distance between the active material particles increases.
  • the average length of the metal nanowires is 42 ⁇ m to 70 ⁇ m, a long conductive network can be formed by a sufficient length, and aggregation between the metal nanowires can be further minimized.
  • the metal nanowires can be easily observed through elemental analysis using elemental analysis equipment such as EDS (Energy Dispersive X-ray Spectometer), and the shape, diameter, and length through a scanning microscope (SEM). All can be observed with the naked eye.
  • EDS Electronic Dispersive X-ray Spectometer
  • SEM scanning microscope
  • the average length and average diameter of the metal nanowires are obtained by taking a SEM photo so that 100 metal nanowires in the cathode are visible, and then measuring the length and diameter of the metal nanowires, After sorting in order, it can be calculated by averaging the lengths and diameters of the top 30 to 100 in a large order.
  • the metal nanowires may be included in an amount of 0.001% to 2.5% by weight, specifically 0.001% to 2.2% by weight, and more specifically 1.2% to 2.2% by weight in the negative active material layer.
  • aggregation between metal nanowires is minimized, and an electrical contact network is formed in the electrode, so that a conductive path is formed to be wide, so that conductivity can be maintained at a high level.
  • the negative electrode may further include a binder. More specifically, in order to form the negative active material layer, when preparing the negative active material slurry, a binder may be added in addition to the solvent. In this case, the binder is used to increase physical adhesion between components included in the negative active material slurry, and to increase physical adhesion between the negative active material slurry and the metal current collector when manufacturing the negative electrode.
  • the binder is carboxymethylcellulose (CMC), (the binder is polyvinylidene fluoride-hexafluoropropylene copolymer (PVDF-co-HFP), polyvinylidenefluoride, polyacrylic Nitrile (polyacrylonitrile), polymethylmethacrylate (polymethylmethacrylate), polyvinyl alcohol, carboxymethylcellulose (CMC), starch, hydroxypropyl cellulose, recycled cellulose, polyvinylpyrrolidone, polytetrafluoroethylene, polyethylene, poly The group consisting of propylene, ethylene-propylene-diene monomer (EPDM), sulfonated EPDM, styrene butadiene rubber (SBR), fluorine rubber, polyacrylic acid, and substances in which hydrogen is substituted with Li, Na or Ca, etc. It may include at least any one selected from, and may also include various copolymers thereof.
  • EPDM ethylene-propylene-diene monomer
  • the negative electrode may be formed by coating (coating and drying) a negative active material slurry on the metal current collector.
  • the negative active material slurry may include a solvent together with the negative active material and metal nanowires described above.
  • the solvent may include an organic solvent such as N-methyl-2-pyrrolidone (NMP), and the negative active material slurry may be used in an amount having a desirable viscosity.
  • NMP N-methyl-2-pyrrolidone
  • a lithium secondary battery according to an embodiment of the present invention includes a positive electrode, a negative electrode, and an electrolyte for a lithium secondary battery, and may further include a separator that may be selectively disposed between the positive electrode and the negative electrode.
  • the positive electrode may be prepared by coating a positive electrode active material slurry including a positive electrode active material, a positive electrode binder, a positive electrode conductive material, and a solvent on the positive electrode current collector.
  • the positive electrode current collector is not particularly limited as long as it has conductivity without causing a chemical change in the battery, for example, stainless steel, aluminum, nickel, titanium, calcined carbon, or carbon on the surface of aluminum or stainless steel. , Surface treatment with nickel, titanium, silver, or the like can be used. Alternatively, microscopic irregularities may be formed on the surface to enhance the bonding force of the positive electrode active material, and may be used in various forms such as films, sheets, foils, nets, porous bodies, foams, and nonwoven fabrics.
  • the positive electrode active material is a compound capable of reversible intercalation and deintercalation of lithium, and specifically, may include a lithium composite metal oxide containing lithium and one or more metals such as cobalt, manganese, nickel, or aluminum. have. More specifically, the lithium composite metal oxide is a lithium-manganese-based oxide (eg, LiMnO 2 , LiMn 2 O 4, etc.), a lithium-cobalt-based oxide (eg, LiCoO 2, etc.), and a lithium-nickel-based oxide (E.g., LiNiO 2 ), lithium-nickel-manganese oxide (e.g., LiNi 1-Y1 Mn Y1 O 2 (here, 0 ⁇ Y1 ⁇ 1), LiMn 2-z1 Ni z1 O 4 ( Here, 0 ⁇ Z1 ⁇ 2), lithium-nickel-cobalt oxide (e.g., LiNi 1-Y2 Co Y2 O 2 (here, 0 ⁇ Y2 ⁇ 1), etc.
  • the lithium composite metal oxide is LiCoO 2 , LiMnO 2 , LiNiO 2 , lithium nickel manganese cobalt oxide (e.g., Li(Ni 0.6 Mn 0.2 Co 0.2 )O 2 ) in that it can increase the capacity characteristics and stability of the battery.
  • the lithium composite metal oxide is Li(Ni 0.6 Mn 0.2 Co 0.2 )O 2 , Li(Ni 0.5 Mn 0.3 Co 0.2 )O 2 , Li(Ni 0.7 Mn 0.15 Co 0.15 )O 2 or Li(Ni 0.8 Mn 0.1 Co 0.1 )O 2, etc., any one or a mixture of two or more of them may be used. have.
  • the positive electrode binder is a component that assists in bonding a positive electrode active material to a positive electrode conductive material and bonding to a current collector.
  • polyvinylidene fluoride polyvinyl alcohol, carboxymethylcellulose (CMC), starch, hydroxypropylcellulose, regenerated cellulose, polyvinylpyrrolidone, polytetrafluoroethylene, polyethylene (PE ), polypropylene, ethylene-propylene-diene terpolymer (EPDM), sulfonated EPDM, styrene-butadiene rubber, styrene-butadiene rubber-carboxymethylcellulose (SBR-CMC), fluorine rubber, various copolymers, etc. I can.
  • the positive electrode conductive material is a component for further improving the conductivity of the positive electrode active material, and is not particularly limited as long as it has conductivity without causing chemical changes in the battery, and examples thereof include graphite; Carbon blacks such as acetylene black, Ketjen black, channel black, furnace black, lamp black, and thermal black; Conductive fibers such as carbon fibers and metal fibers; Metal powders such as carbon fluoride, aluminum, and nickel powder; Conductive whiskey such as zinc oxide and potassium titanate; Conductive metal oxides such as titanium oxide; Conductive materials such as polyphenylene derivatives may be used.
  • Carbon blacks such as acetylene black, Ketjen black, channel black, furnace black, lamp black, and thermal black
  • Conductive fibers such as carbon fibers and metal fibers
  • Metal powders such as carbon fluoride, aluminum, and nickel powder
  • Conductive whiskey such as zinc oxide and potassium titanate
  • Conductive metal oxides such as titanium oxide
  • Conductive materials such as polyphenylene derivatives may be used
  • conductive materials include acetylene black-based Chevron Chemical Company, Denka Singapore Private Limited, Gulf Oil Company, etc.), Ketjenblack, EC The group (Armak Company), Vulcan XC-72 (Cabot Company) and Super P (Timcal).
  • the solvent may contain an organic solvent such as NMP (N-methyl-2-pyrrolidone), and may be used in an amount having a desirable viscosity when the positive electrode active material and optionally a positive electrode binder and a positive electrode conductive material are included. have.
  • NMP N-methyl-2-pyrrolidone
  • the electrolyte for a lithium secondary battery may be an organic liquid electrolyte, an inorganic liquid electrolyte, a solid polymer electrolyte, a gel polymer electrolyte, a solid inorganic electrolyte, a molten inorganic electrolyte, etc. that can be used when manufacturing a lithium secondary battery, but is not limited thereto.
  • the electrolyte for a lithium secondary battery may include an organic solvent and a lithium salt.
  • the organic solvent may be used without particular limitation as long as it can serve as a medium through which ions involved in the electrochemical reaction of a battery can move.
  • the organic solvent include ester solvents such as methyl acetate, ethyl acetate, ⁇ -butyrolactone, and ⁇ -caprolactone; Ether solvents such as dibutyl ether or tetrahydrofuran; Ketone solvents such as cyclohexanone; Aromatic hydrocarbon solvents such as benzene and fluorobenzene; Dimethylcarbonate (DMC), diethylcarbonate (DEC), methylethylcarbonate (MEC), ethylmethylcarbonate (EMC), ethylene carbonate (EC), propylene carbonate, Carbonate-based solvents such as PC); Alcohol solvents such as ethyl alcohol and isopropyl alcohol; Nitriles such as R-CN (R is a C 2 to C 20 linear, branched or cyclic hydrocarbon group and
  • carbonate-based solvents are preferred, and cyclic carbonates having high ionic conductivity and high dielectric constant (e.g., ethylene carbonate or propylene carbonate, etc.), which can improve the charging/discharging performance of the battery, and low-viscosity linear carbonate-based compounds (for example, a mixture of ethylmethyl carbonate, dimethyl carbonate or diethyl carbonate) is more preferable.
  • cyclic carbonate and the chain carbonate are mixed in a volume ratio of about 1:1 to about 1:9, the electrolyte may exhibit excellent performance.
  • the lithium salt may be used without particular limitation as long as it is a compound capable of providing lithium ions used in lithium secondary batteries.
  • the lithium salt is LiPF 6 , LiClO 4 , LiAsF 6 , LiBF 4 , LiSbF 6 , LiAl0 4 , LiAlCl 4 , LiCF 3 SO 3 , LiC 4 F 9 SO 3 , LiN(C 2 F 5 SO 3 ) 2 , LiN(C 2 F 5 SO 2 ) 2 , LiN(CF 3 SO 2 ) 2 .
  • LiCl, LiI, or LiB(C 2 O 4 ) 2 and the like can be used.
  • the concentration of the lithium salt is preferably used within the range of 0.1M to 2.0M. When the concentration of the lithium salt is within the above range, since the electrolyte has an appropriate conductivity and viscosity, excellent electrolyte performance can be exhibited, and lithium ions can move effectively.
  • the electrolyte for a lithium secondary battery includes, for example, a haloalkylene carbonate-based compound such as difluoro ethylene carbonate, for the purpose of improving the life characteristics of the battery, suppressing the decrease in battery capacity, and improving the discharge capacity of the battery, Pyridine, triethylphosphite, triethanolamine, cyclic ether, ethylene diamine, n-glyme, hexaphosphate triamide, nitrobenzene derivative, sulfur, quinone imine dye, N-substituted oxazolidinone, N,N- One or more additives such as substituted imidazolidine, ethylene glycol dialkyl ether, ammonium salt, pyrrole, 2-methoxy ethanol or aluminum trichloride may be further included.
  • a haloalkylene carbonate-based compound such as difluoro ethylene carbonate
  • the separator is a conventional porous polymer film conventionally used as a separator, for example, a polyolefin-based polymer such as ethylene homopolymer, propylene homopolymer, ethylene/butene copolymer, ethylene/hexene copolymer, and ethylene/methacrylate copolymer.
  • a porous polymer film made of a polymer can be used alone or by laminating them, and a polyolefin-based porous polymer film coated with inorganic particles (eg, Al 2 O 3 ) or a conventional porous non-woven fabric, such as glass fiber having a high melting point , Non-woven fabric made of polyethylene terephthalate fiber, etc. may be used, but is not limited thereto.
  • a battery module including the lithium secondary battery as a unit cell and a battery pack including the same are provided. Since the battery module and battery pack include the lithium secondary battery having high capacity, high rate characteristics, and site characteristics, a medium-large size selected from the group consisting of electric vehicles, hybrid electric vehicles, plug-in hybrid electric vehicles, and power storage systems It can be used as a power source for a device.
  • the powder obtained by mixing Si and SiO 2 in a 1:1 molar ratio was vacuum-heated at 1,400°C to form SiO vapor. Further, magnesium (Mg) was vacuum-heated at 700°C to form magnesium (Mg) vapor.
  • SiO vapor and magnesium (Mg) vapor are mixed at a weight ratio of 95:5, reacted in a cooling zone at 500° C. to solidify, and then pulverized using a ball mill to obtain magnesium having a diameter of 5 ⁇ m.
  • Silicon-based particles containing silicate (Mg-SiO) as a phase were prepared.
  • the magnesium silicate (Mg-SiO) powder was placed in a hot zone of a chemical vapor deposition (CVD) device while maintaining an inert atmosphere by flowing argon (Ar) gas, and argon as a carrier gas.
  • Ar argon
  • the formed silicon-based active material was prepared. Artificial graphite was used as a carbon-based active material.
  • copper nanowires average length: 20 ⁇ m, average diameter: 100 nm, manufactured by Sigma Aldrich
  • carboxymethylcellulose 1 part by weight
  • 2 parts by weight of styrene butadiene rubber were mixed with water as a solvent to prepare a negative active material slurry having a solid content of 50% by weight.
  • the negative active material slurry was coated on a 15 ⁇ m thick copper (Cu) thin film as a metal current collector, dried, and then roll pressed to prepare a negative electrode having a negative active material layer formed on the metal current collector.
  • Cu copper
  • VC vinylene carbonate
  • EMC ethylene carbonate
  • PS propane sultone
  • Example 1 As in Example 1, except that in Example 1, a negative electrode active material slurry was prepared such that the copper nanowires contained 2 parts by weight and 95 parts by weight of the negative electrode active material based on 100 parts by weight of solid content excluding the solvent (water) in the negative electrode active material slurry. A negative electrode and a half cell were prepared in the same manner.
  • Example 1 a negative active material slurry was prepared by using 1 part by weight of silver nanowires (average length: 10 ⁇ m average diameter: 60 nm) based on 100 parts by weight of solid content excluding solvent (water) in the negative electrode active material slurry instead of copper nanowires in Example 1 Except for one, a negative electrode active material, a negative electrode, and a half-cell were manufactured in the same manner as in Example 1.
  • Example 1 a negative electrode active material, a negative electrode, and a half battery were prepared in the same manner as in Example 1, except that a negative electrode active material was prepared by mixing a silicon-based active material and artificial graphite at a weight ratio of 10:90.
  • a negative electrode active material, a negative electrode, and a half battery were manufactured in the same manner as in Example 1, except that copper nanowires having an average diameter of 200 nm and an average length of 30 ⁇ m were used instead of the copper nanowires of Example 1.
  • a negative electrode active material, a negative electrode, and a half-cell were manufactured in the same manner as in Example 1, except that copper nanowires having an average diameter of 50 nm and an average length of 50 ⁇ m were used instead of the copper nanowires of Example 1.
  • a negative electrode active material, a negative electrode, and a half-cell were manufactured in the same manner as in Example 1, except that the average particle diameter (D 50 ) of the silicon-based active material of Example 1 was 3 ⁇ m.
  • Example 1 a negative active material, a negative electrode, and a half-cell were prepared in the same manner as in Example 1, except that 1 part by weight of Super-C (diameter: 65 nm) was used instead of 1 part by weight of copper nanowires to prepare a negative active material.
  • 1 part by weight of Super-C (diameter: 65 nm) was used instead of 1 part by weight of copper nanowires to prepare a negative active material.
  • Example 1 in the same manner as in Example 1, except that 1 part by weight of a carbon nanotube (average length: 10 ⁇ m, average diameter: 10 nm) was used instead of 1 part by weight of copper nanowires.
  • a negative electrode active material, a negative electrode, and a half-cell were prepared.
  • Example 4 a negative electrode active material, a negative electrode, and a half battery were prepared in the same manner as in Example 1, except that 1 part by weight of Super-C (diameter: 65 nm) was used instead of 1 part by weight of copper nanowires to prepare a negative active material.
  • 1 part by weight of Super-C (diameter: 65 nm) was used instead of 1 part by weight of copper nanowires to prepare a negative active material.
  • Metal nanowire content (% by weight) Types of metal nanowires Average diameter of metal nanowires (nm) Average length of metal nanowires ( ⁇ m) Average particle diameter of silicon-based particles (D 50 )( ⁇ m) Weight ratio of silicon-based active material and carbon-based active material
  • Example 1 One Copper 100 20 5 5:95
  • Example 2 Copper 100 20 5 5:95
  • Example 3 One silver 60 10 5 5:95
  • Example 4 One Copper 100 20 5 10:90
  • Example 5 One Copper 200 30 5 5:95
  • Example 6 One Copper 50 50 5 5:95
  • Example 7 One Copper 100 20 3 5:95 Comparative Example 1
  • Comparative Example 2 CNT 1% by weight CNT CNT 10nm CNT 10 ⁇ m 5 5:95
  • Comparative Example 3 Super-C 1% by weight Super-C -(Average particle diameter: 65nm) - 5 10:90
  • Equation 1 The initial efficiency was calculated by Equation 1 below.
  • the capacity retention rate was calculated by Equation 2 below.
  • Capacity retention (%) ⁇ (discharge capacity in 30 cycles) / (1.0V discharge capacity in 1 cycle) ⁇ ⁇ 100
  • Each half-battery prepared in the above Examples and Comparative Examples was charged at 25°C with a constant current (CC) of 0.1 C until 5 mV, and then charged with a constant voltage (CV) of 5 mV, so that the charging current was 0.005 C ( cut-off current), and then allowed to stand for 30 minutes, and then discharged until 1.5 V with a constant current of 0.1C (CC). Thereafter, the discharge capacity when the charging/discharging was repeated 3 times was measured and defined as the initial discharge capacity.
  • CC constant current
  • CV constant voltage
  • the battery according to the embodiment maintains high initial efficiency and high capacity retention rate and high temperature capacity retention rate.
  • the silicon-based active material and the carbon-based active material have higher initial efficiency, capacity retention rate, and high-temperature capacity retention rate as compared to Comparative Example 3 using a negative electrode active material containing the same weight ratio.
  • Example 1 when comparing Example 1 and Example 7, it can be seen that the effect is further improved when a silicon-based active material having an appropriate average particle diameter is used in consideration of compatibility with the metal nanowires used in the present invention.
  • Example 1 when comparing Example 1 and Example 3, it can be seen that the capacity retention rate of Example 1 using copper nanowires, which is the same material as the copper current collector, is better.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

La présente invention concerne une anode et une batterie secondaire au lithium comprenant l'anode, l'anode comprenant un collecteur de courant métallique et une couche de matériau actif d'anode qui comprend un matériau actif d'anode et un nanofil métallique et qui est formée sur le collecteur de courant métallique, le matériau actif d'anode comprenant un matériau actif à base de silicium et un matériau actif à base de carbone, et le nanofil métallique comprenant un ou plusieurs types de métaux choisis dans le groupe constitué par le cuivre, l'or, le nickel, le cobalt et l'argent.
PCT/KR2020/001757 2019-02-08 2020-02-07 Anode et batterie secondaire au lithium la comprenant WO2020162708A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP20752577.5A EP3907786A4 (fr) 2019-02-08 2020-02-07 Anode et batterie secondaire au lithium la comprenant
CN202080013215.0A CN113574696A (zh) 2019-02-08 2020-02-07 负极和包括所述负极的锂二次电池
US17/429,085 US20220131157A1 (en) 2019-02-08 2020-02-07 Negative Electrode and Lithium Secondary Battery Including Same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2019-0015166 2019-02-08
KR20190015166 2019-02-08

Publications (1)

Publication Number Publication Date
WO2020162708A1 true WO2020162708A1 (fr) 2020-08-13

Family

ID=71948361

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2020/001757 WO2020162708A1 (fr) 2019-02-08 2020-02-07 Anode et batterie secondaire au lithium la comprenant

Country Status (5)

Country Link
US (1) US20220131157A1 (fr)
EP (1) EP3907786A4 (fr)
KR (1) KR102476320B1 (fr)
CN (1) CN113574696A (fr)
WO (1) WO2020162708A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022267013A1 (fr) * 2021-06-25 2022-12-29 宁德新能源科技有限公司 Dispositif électrochimique et dispositif électronique

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113707862A (zh) * 2021-08-26 2021-11-26 厦门大学 一种铜纳米线缠绕硅碳复合材料及其制备方法和应用
KR102488633B1 (ko) * 2022-08-17 2023-01-13 주식회사 덕산일렉테라 이차전지용 전해액 첨가제, 이를 포함하는 리튬 이차전지용 비수 전해액, 및 이를 포함하는 리튬 이차전지
CN116888801A (zh) * 2022-09-22 2023-10-13 德山伊莱特拉有限公司 二次电池用电解液添加剂、包含该二次电池用电解液添加剂的锂二次电池用非水电解液、以及包含该锂二次电池用非水电解液的锂二次电池
KR102514199B1 (ko) * 2022-09-22 2023-03-27 주식회사 덕산일렉테라 이차전지용 전해액 첨가제, 이를 포함하는 리튬 이차전지용 비수 전해액, 및 이를 포함하는 리튬 이차전지

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130004536A (ko) * 2011-06-30 2013-01-11 삼성에스디아이 주식회사 음극 활물질, 그 제조방법 및 이를 포함하는 리튬 전지
KR20130055920A (ko) * 2011-11-21 2013-05-29 한국과학기술원 은 나노와이어 네트워크를 포함하는 전극 활물질 및 이의 제조 방법
KR20130092943A (ko) 2012-02-13 2013-08-21 삼성에스디아이 주식회사 리튬 이차 전지용 음극 활물질, 이의 제조 방법 및 이를 포함하는 리튬 이차 전지
KR20150005278A (ko) * 2013-07-05 2015-01-14 삼성에스디아이 주식회사 리튬 이차 전지용 전극 및 이를 이용한 리튬 이차 전지
KR20150020959A (ko) * 2013-08-19 2015-02-27 삼성테크윈 주식회사 리튬 이차 전지용 전극, 그 제조방법 및 이를 구비하는 리튬 이차 전지
KR20170004673A (ko) * 2015-07-03 2017-01-11 삼성에스디아이 주식회사 음극 활물질, 이를 채용한 리튬 전지 및 이의 제조 방법

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101328982B1 (ko) * 2006-04-17 2013-11-13 삼성에스디아이 주식회사 음극 활물질 및 그 제조 방법
JP4844849B2 (ja) * 2008-04-23 2011-12-28 ソニー株式会社 リチウムイオン二次電池用負極およびリチウムイオン二次電池
CN102122708A (zh) * 2010-01-08 2011-07-13 中国科学院物理研究所 用于锂离子二次电池的负极材料、含该负极材料的负极及其制备方法以及含该负极的电池
US20110189510A1 (en) * 2010-01-29 2011-08-04 Illuminex Corporation Nano-Composite Anode for High Capacity Batteries and Methods of Forming Same
KR101337488B1 (ko) * 2011-05-26 2013-12-05 광주과학기술원 리튬 이차전지용 전극, 이의 제조방법 및 리튬 이차전지
KR101708360B1 (ko) * 2011-10-05 2017-02-21 삼성에스디아이 주식회사 음극 활물질 및 이를 채용한 리튬 전지
KR20130004536U (ko) * 2012-01-13 2013-07-23 쳉 퀴 주식회사 자동차 라이트 어셈블리
CN104319373A (zh) * 2014-10-21 2015-01-28 中国科学院半导体研究所 硅基锂离子电池负极材料的简单制备方法
KR20160054315A (ko) * 2014-11-06 2016-05-16 삼성에스디아이 주식회사 리튬 이차 전지용 전극 및 이를 포함하는 리튬 이차 전지
US10319987B2 (en) * 2015-12-21 2019-06-11 Nissan North America, Inc. Active material with expansion structure for use in lithium ion batteries
FR3047843B1 (fr) * 2016-02-12 2018-03-09 Commissariat A L'energie Atomique Et Aux Energies Alternatives Electrode electrochrome pour dispositif de stockage d'energie
JP7027644B2 (ja) * 2016-06-02 2022-03-02 エルジー エナジー ソリューション リミテッド 負極活物質、それを含む負極、およびそれを含むリチウム二次電池
KR102157183B1 (ko) * 2017-03-07 2020-09-18 주식회사 엘지화학 음극 활물질, 상기 음극 활물질을 포함하는 음극, 및 상기 음극을 포함하는 이차 전지

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130004536A (ko) * 2011-06-30 2013-01-11 삼성에스디아이 주식회사 음극 활물질, 그 제조방법 및 이를 포함하는 리튬 전지
KR20130055920A (ko) * 2011-11-21 2013-05-29 한국과학기술원 은 나노와이어 네트워크를 포함하는 전극 활물질 및 이의 제조 방법
KR20130092943A (ko) 2012-02-13 2013-08-21 삼성에스디아이 주식회사 리튬 이차 전지용 음극 활물질, 이의 제조 방법 및 이를 포함하는 리튬 이차 전지
KR20150005278A (ko) * 2013-07-05 2015-01-14 삼성에스디아이 주식회사 리튬 이차 전지용 전극 및 이를 이용한 리튬 이차 전지
KR20150020959A (ko) * 2013-08-19 2015-02-27 삼성테크윈 주식회사 리튬 이차 전지용 전극, 그 제조방법 및 이를 구비하는 리튬 이차 전지
KR20170004673A (ko) * 2015-07-03 2017-01-11 삼성에스디아이 주식회사 음극 활물질, 이를 채용한 리튬 전지 및 이의 제조 방법

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3907786A4

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022267013A1 (fr) * 2021-06-25 2022-12-29 宁德新能源科技有限公司 Dispositif électrochimique et dispositif électronique

Also Published As

Publication number Publication date
EP3907786A4 (fr) 2022-03-02
KR20200097658A (ko) 2020-08-19
US20220131157A1 (en) 2022-04-28
CN113574696A (zh) 2021-10-29
KR102476320B1 (ko) 2022-12-13
EP3907786A1 (fr) 2021-11-10

Similar Documents

Publication Publication Date Title
WO2018097562A1 (fr) Électrode positive pour accumulateur et accumulateur lithium-ion la comprenant
WO2019103460A1 (fr) Matériau d'électrode positive pour accumulateur et accumulateur au lithium le comprenant
WO2019151834A1 (fr) Matériau actif de cathode pour batterie secondaire, son procédé de préparation et batterie secondaire au lithium le comprenant
WO2020162708A1 (fr) Anode et batterie secondaire au lithium la comprenant
WO2019225969A1 (fr) Matériau d'électrode positive destiné à une batterie rechargeable au lithium, électrode positive destinée à une batterie rechargeable au lithium comprenant ledit matériau, et batterie rechargeable au lithium
WO2020185014A1 (fr) Électrode négative et batterie secondaire la comprenant
WO2020262890A1 (fr) Anode et batterie secondaire la comprenant
WO2019074306A2 (fr) Matériau actif d'électrode positive, son procédé de préparation et batterie rechargeable au lithium le comprenant
WO2018217071A1 (fr) Procédé de fabrication de cathode pour une batterie rechargeable, cathode pour une batterie rechargeable fabriquée par ce procédé, et batterie rechargeable au lithium comprenant la même cathode
WO2014204278A1 (fr) Matériau actif d'électrode à capacité élevée pour batterie secondaire au lithium et batterie secondaire au lithium l'utilisant
WO2019168308A1 (fr) Cathode et batterie secondaire comprenant une cathode
WO2019098541A1 (fr) Matériau actif de cathode pour batterie secondaire, son procédé de fabrication, et batterie secondaire au lithium comprenant celui-ci
WO2019093820A1 (fr) Matériau actif d'électrode négative, électrode négative comprenant ledit matériau actif d'électrode négative, et accumulateur comprenant ladite électrode négative
WO2018174616A1 (fr) Composition de pré-dispersion de matériau actif d'électrode positive, électrode positive pour batterie secondaire, et batterie secondaire au lithium la comprenant
WO2019177403A1 (fr) Matériau actif d'anode pour batterie secondaire au lithium et anode pour batterie secondaire au lithium le comprenant
WO2022164281A1 (fr) Électrode positive et batterie secondaire au lithium la comprenant
WO2021153936A1 (fr) Matériau actif d'électrode positive pour batterie secondaire et batterie secondaire au lithium comprenant celui-ci
WO2018174619A1 (fr) Procédé de production d'une composition de barbotine pour électrode positive de batterie secondaire, électrode positive pour batterie secondaire produite à l'aide de celui-ci, et batterie secondaire au lithium la comprenant
WO2022045852A1 (fr) Électrode négative et batterie secondaire la comprenant
WO2021025464A1 (fr) Copolymère pour électrolyte polymère, électrolyte polymère en gel le comprenant et batterie secondaire au lithium
WO2019078506A2 (fr) Procédé de préparation de matériau de cathode active pour batterie secondaire au lithium, matériau de cathode active pour batterie secondaire au lithium, et batterie secondaire au lithium
WO2021225396A1 (fr) Cathode pour batterie secondaire, son procédé de fabrication et batterie secondaire au lithium la comprenant
WO2022139563A1 (fr) Électrode négative pour batterie secondaire, suspension pour électrode négative et procédé de fabrication d'électrode négative
WO2022139452A1 (fr) Procédé de fabrication d'électrode positive pour batterie rechargeable au lithium et électrode positive pour batterie rechargeable au lithium ainsi fabriquée
WO2019066585A1 (fr) Méthode de préparation de matériau actif de cathode pour batterie secondaire, matériau actif de cathode ainsi préparé, et batterie secondaire au lithium le contenant

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20752577

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2020752577

Country of ref document: EP

Effective date: 20210804

NENP Non-entry into the national phase

Ref country code: DE